Helicopter crashed at Perth Airport

[Rigga]

Pilots views are generally incorrect in this respect. Ground Crew have been doing ground runs in many companies for as long as I can remember. SOME companies specify pilots only to do the job, but then have to wait til a suitable pilot can be found = uneconomic (and economics is normally driven by owner/pilots). It was even practiced in the RAF for a while, though admittedly without Blades on a Chinook.
Engineers are normally trained for this purpose and are much more practiced than portrayed here. And it's not uncommon for engineers to become pilots to do this and flight checks too.

Added Bit:
I know of two engineers that conduct post-maintenance flight checks and they do it from an engineers POV, not from a pilots view. Their aircraft are/were generally accepted as in the best possible condition post checks.